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Phase Transformation and Magnetic Hardening in Isolated FePt Nanoparticles

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Phase Transformation and Magnetic Hardening in Isolated FePt Nanoparticles

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dc.contributor.author Liu, J. Ping
dc.contributor.author Rong, Chuanbing
dc.contributor.author Nandwana, Vikas
dc.contributor.author Poudyal, Narayan
dc.contributor.author Chaubey, Girija Shankar
dc.date.accessioned 2010-08-18T18:13:26Z
dc.date.available 2010-08-18T18:13:26Z
dc.date.issued 2009-03-31
dc.identifier.citation IEEE Trans. Nanotech. vol. 8, no. 4, pp437-443 en_US
dc.identifier.issn 1536-125X
dc.identifier.uri http://hdl.handle.net/10106/5020
dc.description.abstract Isolated monodisperse L1[subscript]0 FePt nanoparticles coated by carbon were obtained by adding enough surfactants that decomposed into carbon after the chemical synthesis and postannealing of the A1 FePt nanoparticles. The effect of isolation between FePt nanoparticles on the phase transition temperature and magnetic properties has been studied systematically by thermal, magnetic, and structural characterizations and analyses. It was found that the A1 to L10 phase transition temperature is dependent sensitively on the amount of isolation medium. The transition temperature shift reaches 150-200degC from nonisolated particle assemblies to completely isolated particles, which may be attributed to the high activation energy of the phase transformation for the isolated particles. en_US
dc.description.sponsorship IEEE Nanotechnology Council en_US
dc.language.iso en_US en_US
dc.publisher IEEE en_US
dc.subject annealing en_US
dc.subject carbon en_US
dc.subject coercive force en_US
dc.subject decomposition en_US
dc.subject hardening en_US
dc.subject iron alloys en_US
dc.subject magnetic anisotropy en_US
dc.subject magnetic particles en_US
dc.subject magnetic transition temperature en_US
dc.subject nanoparticles en_US
dc.subject nanotechnology en_US
dc.subject platinum alloys en_US
dc.subject solid-state phase transformations en_US
dc.subject surfactants en_US
dc.title Phase Transformation and Magnetic Hardening in Isolated FePt Nanoparticles en_US
dc.type Article en_US
dc.publisher.department Department of Physics, The University of Texas at Arlington en_US
dc.identifier.externalLink http://ieeexplore.ieee.org/servlet/opac?punumber=7729 en_US
dc.identifier.externalLinkDescription External link to the published article en_US

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